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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 535 · 40 sums
TalentJR

The trick (Gunita Samuccayah): Add the digits of a number; keep adding until one digit is left (a total of 9 stays 9). For a product, multiply the digital roots of the two numbers and take the digital root of that. If your answer’s digital root is different, the answer is wrong.

NameDateTime takenScore ___ / 40
  1. 1.Digital root of 95 × 30 =
  2. 2.Digital root of 40688 =
  3. 3.Digital root of 29 × 89 =
  4. 4.Digital root of 29735 =
  5. 5.Digital root of 67882 =
  6. 6.Digital root of 19 × 38 =
  7. 7.Digital root of 20184 =
  8. 8.Digital root of 12 × 49 =
  9. 9.Digital root of 87 × 40 =
  10. 10.Digital root of 36 × 57 =
  11. 11.Digital root of 86442 =
  12. 12.Digital root of 55 × 88 =
  13. 13.Digital root of 53 × 27 =
  14. 14.Digital root of 10229 =
  15. 15.Digital root of 83 × 70 =
  16. 16.Digital root of 50 × 87 =
  17. 17.Digital root of 98797 =
  18. 18.Digital root of 70 × 32 =
  19. 19.Digital root of 19 × 87 =
  20. 20.Digital root of 46581 =
  21. 21.Digital root of 17 × 36 =
  22. 22.Digital root of 61 × 98 =
  23. 23.Digital root of 93016 =
  24. 24.Digital root of 26 × 16 =
  25. 25.Digital root of 78540 =
  26. 26.Digital root of 71231 =
  27. 27.Digital root of 76 × 91 =
  28. 28.Digital root of 50229 =
  29. 29.Digital root of 53 × 44 =
  30. 30.Digital root of 47489 =
  31. 31.Digital root of 36 × 96 =
  32. 32.Digital root of 67 × 17 =
  33. 33.Digital root of 38 × 76 =
  34. 34.Digital root of 31 × 18 =
  35. 35.Digital root of 75 × 73 =
  36. 36.Digital root of 62 × 54 =
  37. 37.Digital root of 31510 =
  38. 38.Digital root of 38 × 94 =
  39. 39.Digital root of 4241 =
  40. 40.Digital root of 16090 =

Answer key

  1. 6
  2. 8
  3. 7
  4. 8
  5. 4
  6. 2
  7. 6
  8. 3
  9. 6
  10. 9
  11. 6
  12. 7
  13. 9
  14. 5
  15. 5
  16. 3
  17. 4
  18. 8
  19. 6
  20. 6
  21. 9
  22. 2
  23. 1
  24. 2
  25. 6
  26. 5
  27. 4
  28. 9
  29. 1
  30. 5
  31. 9
  32. 5
  33. 8
  34. 9
  35. 3
  36. 9
  37. 1
  38. 8
  39. 2
  40. 7

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